The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
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Some older/less efficient worker termites will develop 'backpacks' of toxic chemicals that explode when the termite is threatened. They are essentially used as suicide bombers when the colony is being attacked.
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A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
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A 42-foot sperm whale has about 7 tons of oil in it.
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In order to enhance the taste, Japanese macaque wash their food in salt water before they eat. They also make snowballs for fun!
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